At a Glance
- Tasks: Lead the technical implementation of a geo holdout programme for Prime Video across Europe.
- Company: Join WPP Media, a leader in AI-driven media solutions and creativity.
- Benefits: Competitive salary, dynamic work environment, and opportunities for professional growth.
- Other info: Collaborate with top talent and work on ambitious projects with global clients.
- Why this job: Make a real impact on media measurement and drive innovation in marketing.
- Qualifications: Strong technical skills in data science and experience with geospatial data.
The predicted salary is between 63000 - 77000 £ per year.
About WPP Media
WPP is the trusted growth partner for the world's leading brands. With exceptional talent, trusted data and intelligence, and world-class partnerships - all united by our pioneering agentic marketing platform, WPP Open - we help clients navigate change, capture opportunity, and deliver transformational growth. WPP Media is WPP's AI-driven media operating unit, bringing together media, data, and partnerships to deliver creative personalisation at scale.
Role Summary and Impact
The purpose of this document is to help prospective team members better understand the role and responsibilities for the position of Data Scientist - Geo Holdout Programme at OpenDoor, WPP's bespoke global operating model for Amazon.
ABOUT THE ROLE
We are searching for a talented and technically exceptional individual to join our OpenDoor team as a Data Scientist, dedicated to the delivery of Prime Video's expanded geo holdout programme across Europe. This is a full-time permanent position based in London. The role reports into the EU Measurement Lead. This is a rare opportunity to own the technical backbone of one of the most analytically rigorous media measurement programmes in market - designing and operating the infrastructure that enables up to 55 geo holdout experiments across seven European markets, including the UK, Germany, France, Spain, Italy, and optional extension into Poland and Turkey. The work sits at the intersection of geospatial data engineering, media platform API integration, and incrementality measurement, and will directly inform how Prime Video plans and invests in theatrical and streaming campaigns across APAC and Europe.
RESPONSIBILITIES
- Own the end-to-end technical implementation of the geo holdout programme, serving as the dedicated technical lead across all markets and experiment waves.
- Construct and maintain the NUTS3-to-platform geo lookup table, mapping regional boundary data from ONS and Eurostat sources to platform-specific geo targeting formats across Meta, DV360, X, Sprinklr, and all other in-scope media platforms.
- Build and operate the weekly campaign-to-experiment calendar matching script, ensuring geo exclusions are flagged, applied, and verified ahead of each experiment activation.
- Develop and maintain API scripting and bulk upload templates to apply and verify geo exclusions directly within each platform's native geo-targeting capabilities.
- Produce and validate weekly verification reporting at NUTS3 and postcode level, delivered to key Prime Video stakeholders every Friday, clearly documenting impression leakage rates against the programme's defined accuracy thresholds.
- Own human oversight of the agentic QA solution - reviewing automated flags for impression leakage, exclusion drift, and reporting anomalies.
Data Scientist - Geo Holdout (12 month FTC) in London employer: wppmedia
WPP Media is an exceptional employer that fosters a dynamic and collaborative work culture, where innovation and creativity thrive. With a strong focus on employee growth, we offer numerous opportunities for professional development and advancement within the retail media landscape. Located in the UK, our team enjoys a vibrant environment that encourages work-life balance and celebrates diverse perspectives, making it a rewarding place to build a meaningful career.
